/Engine/Source/Runtime/Datasmith/DatasmithCore/Public/DatasmithAnimationElements.h
Return the frame of the given transform type at the given index or an invalid frame if the index was out of bounds
const [FDatasmithTransformFrameInfo](API\Runtime\DatasmithCore\FDatasmithTransformFrameInfo) & GetFrame ( EDatasmithTransformType TransformType, int32 Index ) const